wolgamott



S. B. WOLGAMOTT.

ENGINE CYLINDER.

APPLICATION FILED SEPT-28.1918

JNVENTOR. Swzud Bo Wbyamww BY SAMUEL B. WQLGAMGTT, OE STOCKTON, GALIFGENIA, ASSIGNOR 03F ONE-HALF TO L. F. GRIMSLEY, 01F STOGKTUN, CALIFQRNIA.

ENGINE-CYLINDER,

specification of Letters Patent. Patent- 411 June 1?, 19199.

Application filed September as, me. Serial No. accuse.

To all whom it may concern:

Be it known that I, SAMUEL B. WOLGA- MOTT, a citizen of the United States of America, residing at Stockton, in the county of San Joaquin, State of California, have invented certain new and useful Improvements in Engine-Cylinders; and I do declare the following to be a clear, full, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in engine cylinders and particularly to cylinders for water cooled internal combustion engines of the removable head type.

It is common practice at present to cast gas engine cylinders, either singly or en b loc, with their water jackets formed in such casting. This method is slow and expensive as it necessitates the use of expensive cores for the forming of the jacket in the mold. Furthermore, the finished product can never be inspected properly owing to't'he inacces sibility of the water jacket, and deep blowholes and other defects peculiar to castings are not located until they show up when the interior of the cylinder is turned and the tool cuts into a blow-hole, or when the jacket leaks when put under a hydraulic test. These defects, of course, necessitate the cylinder being discarded, which is expensive, particularly in the case of an en bloc casting and after all the machine work has been done on it. v

Another disadvantage with present day cylinders is the fact that when they have become badly burned or scored through long wear or misuse, the entire cylinder or set of cylinders must be thrown away.

The principal object of my improved cylinder is to do away with the intricately cored cylinder body by casting the outer portion or the jacket covering of the cylinder separate from the piston sleeve. This accomplishes a two-fold purpose ;it enables me to cast the outer portion of the cylinder with the use of a simple barrel core, and provides a piston sleeve which is readily removable from the cylinder, and which in case of the necessity of removal or regrindv ing, may be replaced without taking down the entire englne, and at a minimum of expense. This isparticularly the case with and allows the cylinder'to on, which nut is cylinders cast qggbloo'. This construction'of the cylinder, By forming the water jacket between the walls of the se arate parts, permits of good inspection of the water space be readil disassembled for the purpose of cleaning the acket of scale, mud, etc., which frequently clogs up the Water circulating system and causes the engine to overheat.

As a further object, I have provided a simple and inexpensive form of cylinder construction, and one which will be exceedingly advantageous for the purpose for which it is designed.

These objects, I accomplish by means of such structure and relative arrangement of the parts as will fully appear by a perusal of the following specification and claim.

The figure o the drawings represents a longitudinal section of a gas engine cylinder showing my lmproved form of construction.

Referring now more particularly to the the drawing, the

characters of reference on numeral 1 represents the base of the engine on which is mounted the outer member 2 of the cylinder. This portion has a flange 3 a short distance above its lower end as is customary, and cap screws 4 secure the same to the base 1. For a -portion of its length, the interior of this member 2 is of greater diameter than at the top and bottom thereof, as at 5, thereby forming a chamber 6 between the wall of the same and a piston sleeve or bushing 7 which is slidably mounted in the member 2 and the inner wall thereof, except where said enlarged portion 5 extends.

- jects beyond the end of said member. This end is threaded to receive a lock nut 9 there-- of holes or slots 10 for the reception of a tool to turn the same. i

Stud bolts 11 are secured in the upperend of the member 2, which studs project through suitable orifices provided in the flange 8 and through the valve retaining head 12 of the cylinder. Suitable orifices 13 provide communication between 1 the chamber onwater jacket 6 and the. water jacket of the head. 12. Suitable gaskets 14 are placed between the abutting joints of the provided with a plurality.

impinges against head, flange and body member 2, and between the latter and the lock nut 9, as is customary.

Thus it will be evident that all that is necessary to be done to replace the piston sleeve is to remove the head 12, unscrew the nut 9, and remove the sleeve without removing the outer member 2 from the base. This is as readily accomplished with two or four cast en bloc as with a singly cast member.

Thus, from the foregoing descrlptlon, 1t will readily be seen that I have produced such a device as substantially fulfils the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred'construction of the device, still in practice, such devia tions from such detail may be resorted to as do not form a departure from the spirit of the invention as set forth herein.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is A gas engine cylinder comprising in combination with' a valve retaininghead, an outer member adapted to be secured to the engine base and extending below the same and having its-interior enlarged excepting at the ends thereof, apiston sleeve removably seated in the outer member and projecting below the same, an outwardly projecting flange on the sleeve adapted to seat on the upper surface of the outer member between the same and the head, packing rings above and below the flange, the flange being provided with an orifice giving com munication between the water jacket formed by the outer member and the sleeve and the head, and a lock nut threaded onto the lower end of the sleeve and adapted to bear against the lower face of the outer member, there being a packing ring between the lock nut and said lower end.

In testimony whereof I aflix my signature in presence oftwo witnesses.

' SAMUEL B. WOLGAMOTT.

Witnesses:

VERADINE WARNER, BERNARD PRIVAT. 

